drivers/usb/serial/option.c

   1 /*
   2   USB Driver for GSM modems
   3
   4   Copyright (C) 2005  Matthias Urlichs <smurf@smurf.noris.de>
   5
   6   This driver is free software; you can redistribute it and/or modify
   7   it under the terms of Version 2 of the GNU General Public License as
   8   published by the Free Software Foundation.
   9
  10   Portions copied from the Keyspan driver by Hugh Blemings <hugh@blemings.org>
  11
  12   History: see the git log.
  13
  14   Work sponsored by: Sigos GmbH, Germany <info@sigos.de>
  15
  16   This driver exists because the "normal" serial driver doesn't work too well
  17   with GSM modems. Issues:
  18   - data loss -- one single Receive URB is not nearly enough
  19   - nonstandard flow (Option devices) control
  20   - controlling the baud rate doesn't make sense
  21
  22   This driver is named "option" because the most common device it's
  23   used for is a PC-Card (with an internal OHCI-USB interface, behind
  24   which the GSM interface sits), made by Option Inc.
  25
  26   Some of the "one port" devices actually exhibit multiple USB instances
  27   on the USB bus. This is not a bug, these ports are used for different
  28   device features.
  29 */
  30
  31 #define DRIVER_VERSION "v0.7.2"
  32 #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>"
  33 #define DRIVER_DESC "USB Driver for GSM modems"
  34
  35 #include <linux/kernel.h>
  36 #include <linux/jiffies.h>
  37 #include <linux/errno.h>
  38 #include <linux/tty.h>
  39 #include <linux/tty_flip.h>
  40 #include <linux/module.h>
  41 #include <linux/bitops.h>
  42 #include <linux/usb.h>
  43 #include <linux/usb/serial.h>
  44
  45 /* Function prototypes */
  46 static int  option_open(struct tty_struct *tty, struct usb_serial_port *port,
  47                                                         struct file *filp);
  48 static void option_close(struct tty_struct *tty, struct usb_serial_port *port,
  49                                                         struct file *filp);
  50 static int  option_startup(struct usb_serial *serial);
  51 static void option_shutdown(struct usb_serial *serial);
  52 static int  option_write_room(struct tty_struct *tty);
  53
  54 static void option_instat_callback(struct urb *urb);
  55
  56 static int option_write(struct tty_struct *tty, struct usb_serial_port *port,
  57                         const unsigned char *buf, int count);
  58 static int  option_chars_in_buffer(struct tty_struct *tty);
  59 static void option_set_termios(struct tty_struct *tty,
  60                         struct usb_serial_port *port, struct ktermios *old);
  61 static int  option_tiocmget(struct tty_struct *tty, struct file *file);
  62 static int  option_tiocmset(struct tty_struct *tty, struct file *file,
  63                                 unsigned int set, unsigned int clear);
  64 static int  option_send_setup(struct tty_struct *tty, struct usb_serial_port *port);
  65
  66 /* Vendor and product IDs */
  67 #define OPTION_VENDOR_ID                        0x0AF0
  68 #define OPTION_PRODUCT_COLT                     0x5000
  69 #define OPTION_PRODUCT_RICOLA                   0x6000
  70 #define OPTION_PRODUCT_RICOLA_LIGHT             0x6100
  71 #define OPTION_PRODUCT_RICOLA_QUAD              0x6200
  72 #define OPTION_PRODUCT_RICOLA_QUAD_LIGHT        0x6300
  73 #define OPTION_PRODUCT_RICOLA_NDIS              0x6050
  74 #define OPTION_PRODUCT_RICOLA_NDIS_LIGHT        0x6150
  75 #define OPTION_PRODUCT_RICOLA_NDIS_QUAD         0x6250
  76 #define OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT   0x6350
  77 #define OPTION_PRODUCT_COBRA                    0x6500
  78 #define OPTION_PRODUCT_COBRA_BUS                0x6501
  79 #define OPTION_PRODUCT_VIPER                    0x6600
  80 #define OPTION_PRODUCT_VIPER_BUS                0x6601
  81 #define OPTION_PRODUCT_GT_MAX_READY             0x6701
  82 #define OPTION_PRODUCT_FUJI_MODEM_LIGHT         0x6721
  83 #define OPTION_PRODUCT_FUJI_MODEM_GT            0x6741
  84 #define OPTION_PRODUCT_FUJI_MODEM_EX            0x6761
  85 #define OPTION_PRODUCT_KOI_MODEM                0x6800
  86 #define OPTION_PRODUCT_SCORPION_MODEM           0x6901
  87 #define OPTION_PRODUCT_ETNA_MODEM               0x7001
  88 #define OPTION_PRODUCT_ETNA_MODEM_LITE          0x7021
  89 #define OPTION_PRODUCT_ETNA_MODEM_GT            0x7041
  90 #define OPTION_PRODUCT_ETNA_MODEM_EX            0x7061
  91 #define OPTION_PRODUCT_ETNA_KOI_MODEM           0x7100
  92
  93 #define HUAWEI_VENDOR_ID                        0x12D1
  94 #define HUAWEI_PRODUCT_E600                     0x1001
  95 #define HUAWEI_PRODUCT_E220                     0x1003
  96 #define HUAWEI_PRODUCT_E220BIS                  0x1004
  97 #define HUAWEI_PRODUCT_E1401                    0x1401
  98 #define HUAWEI_PRODUCT_E1403                    0x1403
  99 #define HUAWEI_PRODUCT_E1405                    0x1405
 100 #define HUAWEI_PRODUCT_E1406                    0x1406
 101 #define HUAWEI_PRODUCT_E1408                    0x1408
 102 #define HUAWEI_PRODUCT_E1409                    0x1409
 103 #define HUAWEI_PRODUCT_E1410                    0x1410
 104 #define HUAWEI_PRODUCT_E1411                    0x1411
 105 #define HUAWEI_PRODUCT_E1412                    0x1412
 106 #define HUAWEI_PRODUCT_E1413                    0x1413
 107 #define HUAWEI_PRODUCT_E1414                    0x1414
 108 #define HUAWEI_PRODUCT_E1415                    0x1415
 109 #define HUAWEI_PRODUCT_E1416                    0x1416
 110 #define HUAWEI_PRODUCT_E1417                    0x1417
 111 #define HUAWEI_PRODUCT_E1418                    0x1418
 112 #define HUAWEI_PRODUCT_E1419                    0x1419
 113
 114 #define NOVATELWIRELESS_VENDOR_ID               0x1410
 115
 116 /* MERLIN EVDO PRODUCTS */
 117 #define NOVATELWIRELESS_PRODUCT_V640            0x1100
 118 #define NOVATELWIRELESS_PRODUCT_V620            0x1110
 119 #define NOVATELWIRELESS_PRODUCT_V740            0x1120
 120 #define NOVATELWIRELESS_PRODUCT_V720            0x1130
 121
 122 /* MERLIN HSDPA/HSPA PRODUCTS */
 123 #define NOVATELWIRELESS_PRODUCT_U730            0x1400
 124 #define NOVATELWIRELESS_PRODUCT_U740            0x1410
 125 #define NOVATELWIRELESS_PRODUCT_U870            0x1420
 126 #define NOVATELWIRELESS_PRODUCT_XU870           0x1430
 127 #define NOVATELWIRELESS_PRODUCT_X950D           0x1450
 128
 129 /* EXPEDITE PRODUCTS */
 130 #define NOVATELWIRELESS_PRODUCT_EV620           0x2100
 131 #define NOVATELWIRELESS_PRODUCT_ES720           0x2110
 132 #define NOVATELWIRELESS_PRODUCT_E725            0x2120
 133 #define NOVATELWIRELESS_PRODUCT_ES620           0x2130
 134 #define NOVATELWIRELESS_PRODUCT_EU730           0x2400
 135 #define NOVATELWIRELESS_PRODUCT_EU740           0x2410
 136 #define NOVATELWIRELESS_PRODUCT_EU870D          0x2420
 137
 138 /* OVATION PRODUCTS */
 139 #define NOVATELWIRELESS_PRODUCT_MC727           0x4100
 140 #define NOVATELWIRELESS_PRODUCT_MC950D          0x4400
 141
 142 /* FUTURE NOVATEL PRODUCTS */
 143 #define NOVATELWIRELESS_PRODUCT_EVDO_1          0x6000
 144 #define NOVATELWIRELESS_PRODUCT_HSPA_1          0x7000
 145 #define NOVATELWIRELESS_PRODUCT_EMBEDDED_1      0x8000
 146 #define NOVATELWIRELESS_PRODUCT_GLOBAL_1        0x9000
 147 #define NOVATELWIRELESS_PRODUCT_EVDO_2          0x6001
 148 #define NOVATELWIRELESS_PRODUCT_HSPA_2          0x7001
 149 #define NOVATELWIRELESS_PRODUCT_EMBEDDED_2      0x8001
 150 #define NOVATELWIRELESS_PRODUCT_GLOBAL_2        0x9001
 151
 152 /* AMOI PRODUCTS */
 153 #define AMOI_VENDOR_ID                          0x1614
 154 #define AMOI_PRODUCT_H01                        0x0800
 155 #define AMOI_PRODUCT_H01A                       0x7002
 156 #define AMOI_PRODUCT_H02                        0x0802
 157
 158 #define DELL_VENDOR_ID                          0x413C
 159
 160 #define KYOCERA_VENDOR_ID                       0x0c88
 161 #define KYOCERA_PRODUCT_KPC650                  0x17da
 162 #define KYOCERA_PRODUCT_KPC680                  0x180a
 163
 164 #define ANYDATA_VENDOR_ID                       0x16d5
 165 #define ANYDATA_PRODUCT_ADU_620UW               0x6202
 166 #define ANYDATA_PRODUCT_ADU_E100A               0x6501
 167 #define ANYDATA_PRODUCT_ADU_500A                0x6502
 168
 169 #define AXESSTEL_VENDOR_ID                      0x1726
 170 #define AXESSTEL_PRODUCT_MV110H                 0x1000
 171
 172 #define ONDA_VENDOR_ID                          0x19d2
 173 #define ONDA_PRODUCT_MSA501HS                   0x0001
 174 #define ONDA_PRODUCT_ET502HS                    0x0002
 175
 176 #define BANDRICH_VENDOR_ID                      0x1A8D
 177 #define BANDRICH_PRODUCT_C100_1                 0x1002
 178 #define BANDRICH_PRODUCT_C100_2                 0x1003
 179 #define BANDRICH_PRODUCT_1004                   0x1004
 180 #define BANDRICH_PRODUCT_1005                   0x1005
 181 #define BANDRICH_PRODUCT_1006                   0x1006
 182 #define BANDRICH_PRODUCT_1007                   0x1007
 183 #define BANDRICH_PRODUCT_1008                   0x1008
 184 #define BANDRICH_PRODUCT_1009                   0x1009
 185 #define BANDRICH_PRODUCT_100A                   0x100a
 186
 187 #define BANDRICH_PRODUCT_100B                   0x100b
 188 #define BANDRICH_PRODUCT_100C                   0x100c
 189 #define BANDRICH_PRODUCT_100D                   0x100d
 190 #define BANDRICH_PRODUCT_100E                   0x100e
 191
 192 #define BANDRICH_PRODUCT_100F                   0x100f
 193 #define BANDRICH_PRODUCT_1010                   0x1010
 194 #define BANDRICH_PRODUCT_1011                   0x1011
 195 #define BANDRICH_PRODUCT_1012                   0x1012
 196
 197 #define AMOI_VENDOR_ID                  0x1614
 198 #define AMOI_PRODUCT_9508                       0x0800
 199
 200 #define QUALCOMM_VENDOR_ID                      0x05C6
 201
 202 #define MAXON_VENDOR_ID                         0x16d8
 203
 204 #define TELIT_VENDOR_ID                         0x1bc7
 205 #define TELIT_PRODUCT_UC864E                    0x1003
 206
 207 /* ZTE PRODUCTS */
 208 #define ZTE_VENDOR_ID                           0x19d2
 209 #define ZTE_PRODUCT_MF628                       0x0015
 210 #define ZTE_PRODUCT_MF626                       0x0031
 211 #define ZTE_PRODUCT_CDMA_TECH                   0xfffe
 212
 213 /* Ericsson products */
 214 #define ERICSSON_VENDOR_ID                      0x0bdb
 215 #define ERICSSON_PRODUCT_F3507G                 0x1900
 216
 217 /* Pantech products */
 218 #define PANTECH_VENDOR_ID                       0x106c
 219 #define PANTECH_PRODUCT_PC5740                  0x3701
 220 #define PANTECH_PRODUCT_PC5750                  0x3702  /* PX-500 */
 221 #define PANTECH_PRODUCT_UM150                   0x3711
 222
 223 static struct usb_device_id option_ids[] = {
 224         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
 225         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
 226         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
 227         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD) },
 228         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD_LIGHT) },
 229         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS) },
 230         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_LIGHT) },
 231         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD) },
 232         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT) },
 233         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) },
 234         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA_BUS) },
 235         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER) },
 236         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER_BUS) },
 237         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX_READY) },
 238         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_LIGHT) },
 239         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_GT) },
 240         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_EX) },
 241         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_MODEM) },
 242         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_MODEM) },
 243         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM) },
 244         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_LITE) },
 245         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_GT) },
 246         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_EX) },
 247         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_MODEM) },
 248         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600, 0xff, 0xff, 0xff) },
 249         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220, 0xff, 0xff, 0xff) },
 250         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220BIS, 0xff, 0xff, 0xff) },
 251         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1401, 0xff, 0xff, 0xff) },
 252         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1403, 0xff, 0xff, 0xff) },
 253         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1405, 0xff, 0xff, 0xff) },
 254         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1406, 0xff, 0xff, 0xff) },
 255         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1408, 0xff, 0xff, 0xff) },
 256         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1409, 0xff, 0xff, 0xff) },
 257         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1410, 0xff, 0xff, 0xff) },
 258         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1411, 0xff, 0xff, 0xff) },
 259         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1412, 0xff, 0xff, 0xff) },
 260         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1413, 0xff, 0xff, 0xff) },
 261         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1414, 0xff, 0xff, 0xff) },
 262         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1415, 0xff, 0xff, 0xff) },
 263         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1416, 0xff, 0xff, 0xff) },
 264         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1417, 0xff, 0xff, 0xff) },
 265         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1418, 0xff, 0xff, 0xff) },
 266         { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1419, 0xff, 0xff, 0xff) },
 267         { USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_9508) },
 268         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V640) }, /* Novatel Merlin V640/XV620 */
 269         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V620) }, /* Novatel Merlin V620/S620 */
 270         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V740) }, /* Novatel Merlin EX720/V740/X720 */
 271         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V720) }, /* Novatel Merlin V720/S720/PC720 */
 272         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_U730) }, /* Novatel U730/U740 (VF version) */
 273         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_U740) }, /* Novatel U740 */
 274         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_U870) }, /* Novatel U870 */
 275         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_XU870) }, /* Novatel Merlin XU870 HSDPA/3G */
 276         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_X950D) }, /* Novatel X950D */
 277         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EV620) }, /* Novatel EV620/ES620 CDMA/EV-DO */
 278         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_ES720) }, /* Novatel ES620/ES720/U720/USB720 */
 279         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_E725) }, /* Novatel E725/E726 */
 280         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_ES620) }, /* Novatel Merlin ES620 SM Bus */
 281         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EU730) }, /* Novatel EU730 and Vodafone EU740 */
 282         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EU740) }, /* Novatel non-Vodafone EU740 */
 283         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EU870D) }, /* Novatel EU850D/EU860D/EU870D */
 284         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC950D) }, /* Novatel MC930D/MC950D */
 285         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC727) }, /* Novatel MC727/U727/USB727 */
 286         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EVDO_1) }, /* Novatel EVDO product */
 287         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_HSPA_1) }, /* Novatel HSPA product */
 288         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EMBEDDED_1) }, /* Novatel Embedded product */
 289         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_GLOBAL_1) }, /* Novatel Global product */
 290         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EVDO_2) }, /* Novatel EVDO product */
 291         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_HSPA_2) }, /* Novatel HSPA product */
 292         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EMBEDDED_2) }, /* Novatel Embedded product */
 293         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_GLOBAL_2) }, /* Novatel Global product */
 294
 295         { USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01) },
 296         { USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01A) },
 297         { USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H02) },
 298
 299         { USB_DEVICE(DELL_VENDOR_ID, 0x8114) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite EV620 CDMA/EV-DO */
 300         { USB_DEVICE(DELL_VENDOR_ID, 0x8115) }, /* Dell Wireless 5500 Mobile Broadband HSDPA Mini-Card == Novatel Expedite EU740 HSDPA/3G */
 301         { USB_DEVICE(DELL_VENDOR_ID, 0x8116) }, /* Dell Wireless 5505 Mobile Broadband HSDPA Mini-Card == Novatel Expedite EU740 HSDPA/3G */
 302         { USB_DEVICE(DELL_VENDOR_ID, 0x8117) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO ExpressCard == Novatel Merlin XV620 CDMA/EV-DO */
 303         { USB_DEVICE(DELL_VENDOR_ID, 0x8118) }, /* Dell Wireless 5510 Mobile Broadband HSDPA ExpressCard == Novatel Merlin XU870 HSDPA/3G */
 304         { USB_DEVICE(DELL_VENDOR_ID, 0x8128) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite E720 CDMA/EV-DO */
 305         { USB_DEVICE(DELL_VENDOR_ID, 0x8129) }, /* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite ET620 CDMA/EV-DO */
 306         { USB_DEVICE(DELL_VENDOR_ID, 0x8133) }, /* Dell Wireless 5720 == Novatel EV620 CDMA/EV-DO */
 307         { USB_DEVICE(DELL_VENDOR_ID, 0x8136) }, /* Dell Wireless HSDPA 5520 == Novatel Expedite EU860D */
 308         { USB_DEVICE(DELL_VENDOR_ID, 0x8137) }, /* Dell Wireless HSDPA 5520 */
 309         { USB_DEVICE(DELL_VENDOR_ID, 0x8138) }, /* Dell Wireless 5520 Voda I Mobile Broadband (3G HSDPA) Minicard */
 310         { USB_DEVICE(DELL_VENDOR_ID, 0x8147) }, /* Dell Wireless 5530 Mobile Broadband (3G HSPA) Mini-Card */
 311         { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) },   /* ADU-E100, ADU-310 */
 312         { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) },
 313         { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_620UW) },
 314         { USB_DEVICE(AXESSTEL_VENDOR_ID, AXESSTEL_PRODUCT_MV110H) },
 315         { USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_MSA501HS) },
 316         { USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_ET502HS) },
 317         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) },
 318         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) },
 319         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1004) },
 320         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1005) },
 321         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1006) },
 322         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1007) },
 323         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1008) },
 324         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1009) },
 325         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100A) },
 326         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100B) },
 327         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100C) },
 328         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100D) },
 329         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100E) },
 330         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_100F) },
 331         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1010) },
 332         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1011) },
 333         { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1012) },
 334         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC650) },
 335         { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) },
 336         { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */
 337         { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */
 338         { USB_DEVICE(MAXON_VENDOR_ID, 0x6280) }, /* BP3-USB & BP3-EXT HSDPA */
 339         { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864E) },
 340         { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_MF626) },
 341         { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_MF628) },
 342         { USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH) },
 343         { USB_DEVICE(ERICSSON_VENDOR_ID, ERICSSON_PRODUCT_F3507G) },
 344         { USB_DEVICE(PANTECH_VENDOR_ID, PANTECH_PRODUCT_PC5740) },
 345         { USB_DEVICE(PANTECH_VENDOR_ID, PANTECH_PRODUCT_PC5750) },
 346         { USB_DEVICE(PANTECH_VENDOR_ID, PANTECH_PRODUCT_UM150) },
 347         { } /* Terminating entry */
 348 };
 349 MODULE_DEVICE_TABLE(usb, option_ids);
 350
 351 static struct usb_driver option_driver = {
 352         .name       = "option",
 353         .probe      = usb_serial_probe,
 354         .disconnect = usb_serial_disconnect,
 355         .id_table   = option_ids,
 356         .no_dynamic_id =        1,
 357 };
 358
 359 /* The card has three separate interfaces, which the serial driver
 360  * recognizes separately, thus num_port=1.
 361  */
 362
 363 static struct usb_serial_driver option_1port_device = {
 364         .driver = {
 365                 .owner =        THIS_MODULE,
 366                 .name =         "option1",
 367         },
 368         .description       = "GSM modem (1-port)",
 369         .usb_driver        = &option_driver,
 370         .id_table          = option_ids,
 371         .num_ports         = 1,
 372         .open              = option_open,
 373         .close             = option_close,
 374         .write             = option_write,
 375         .write_room        = option_write_room,
 376         .chars_in_buffer   = option_chars_in_buffer,
 377         .set_termios       = option_set_termios,
 378         .tiocmget          = option_tiocmget,
 379         .tiocmset          = option_tiocmset,
 380         .attach            = option_startup,
 381         .shutdown          = option_shutdown,
 382         .read_int_callback = option_instat_callback,
 383 };
 384
 385 static int debug;
 386
 387 /* per port private data */
 388
 389 #define N_IN_URB 4
 390 #define N_OUT_URB 1
 391 #define IN_BUFLEN 4096
 392 #define OUT_BUFLEN 128
 393
 394 struct option_port_private {
 395         /* Input endpoints and buffer for this port */
 396         struct urb *in_urbs[N_IN_URB];
 397         u8 *in_buffer[N_IN_URB];
 398         /* Output endpoints and buffer for this port */
 399         struct urb *out_urbs[N_OUT_URB];
 400         u8 *out_buffer[N_OUT_URB];
 401         unsigned long out_busy;         /* Bit vector of URBs in use */
 402
 403         /* Settings for the port */
 404         int rts_state;  /* Handshaking pins (outputs) */
 405         int dtr_state;
 406         int cts_state;  /* Handshaking pins (inputs) */
 407         int dsr_state;
 408         int dcd_state;
 409         int ri_state;
 410
 411         unsigned long tx_start_time[N_OUT_URB];
 412 };
 413
 414 /* Functions used by new usb-serial code. */
 415 static int __init option_init(void)
 416 {
 417         int retval;
 418         retval = usb_serial_register(&option_1port_device);
 419         if (retval)
 420                 goto failed_1port_device_register;
 421         retval = usb_register(&option_driver);
 422         if (retval)
 423                 goto failed_driver_register;
 424
 425         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 426                DRIVER_DESC "\n");
 427
 428         return 0;
 429
 430 failed_driver_register:
 431         usb_serial_deregister(&option_1port_device);
 432 failed_1port_device_register:
 433         return retval;
 434 }
 435
 436 static void __exit option_exit(void)
 437 {
 438         usb_deregister(&option_driver);
 439         usb_serial_deregister(&option_1port_device);
 440 }
 441
 442 module_init(option_init);
 443 module_exit(option_exit);
 444
 445 static void option_set_termios(struct tty_struct *tty,
 446                 struct usb_serial_port *port, struct ktermios *old_termios)
 447 {
 448         dbg("%s", __func__);
 449         /* Doesn't support option setting */
 450         tty_termios_copy_hw(tty->termios, old_termios);
 451         option_send_setup(tty, port);
 452 }
 453
 454 static int option_tiocmget(struct tty_struct *tty, struct file *file)
 455 {
 456         struct usb_serial_port *port = tty->driver_data;
 457         unsigned int value;
 458         struct option_port_private *portdata;
 459
 460         portdata = usb_get_serial_port_data(port);
 461
 462         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 463                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 464                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 465                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 466                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 467                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 468
 469         return value;
 470 }
 471
 472 static int option_tiocmset(struct tty_struct *tty, struct file *file,
 473                         unsigned int set, unsigned int clear)
 474 {
 475         struct usb_serial_port *port = tty->driver_data;
 476         struct option_port_private *portdata;
 477
 478         portdata = usb_get_serial_port_data(port);
 479
 480         /* FIXME: what locks portdata fields ? */
 481         if (set & TIOCM_RTS)
 482                 portdata->rts_state = 1;
 483         if (set & TIOCM_DTR)
 484                 portdata->dtr_state = 1;
 485
 486         if (clear & TIOCM_RTS)
 487                 portdata->rts_state = 0;
 488         if (clear & TIOCM_DTR)
 489                 portdata->dtr_state = 0;
 490         return option_send_setup(tty, port);
 491 }
 492
 493 /* Write */
 494 static int option_write(struct tty_struct *tty, struct usb_serial_port *port,
 495                         const unsigned char *buf, int count)
 496 {
 497         struct option_port_private *portdata;
 498         int i;
 499         int left, todo;
 500         struct urb *this_urb = NULL; /* spurious */
 501         int err;
 502
 503         portdata = usb_get_serial_port_data(port);
 504
 505         dbg("%s: write (%d chars)", __func__, count);
 506
 507         i = 0;
 508         left = count;
 509         for (i = 0; left > 0 && i < N_OUT_URB; i++) {
 510                 todo = left;
 511                 if (todo > OUT_BUFLEN)
 512                         todo = OUT_BUFLEN;
 513
 514                 this_urb = portdata->out_urbs[i];
 515                 if (test_and_set_bit(i, &portdata->out_busy)) {
 516                         if (time_before(jiffies,
 517                                         portdata->tx_start_time[i] + 10 * HZ))
 518                                 continue;
 519                         usb_unlink_urb(this_urb);
 520                         continue;
 521                 }
 522                 if (this_urb->status != 0)
 523                         dbg("usb_write %p failed (err=%d)",
 524                                 this_urb, this_urb->status);
 525
 526                 dbg("%s: endpoint %d buf %d", __func__,
 527                         usb_pipeendpoint(this_urb->pipe), i);
 528
 529                 /* send the data */
 530                 memcpy(this_urb->transfer_buffer, buf, todo);
 531                 this_urb->transfer_buffer_length = todo;
 532
 533                 this_urb->dev = port->serial->dev;
 534                 err = usb_submit_urb(this_urb, GFP_ATOMIC);
 535                 if (err) {
 536                         dbg("usb_submit_urb %p (write bulk) failed "
 537                                 "(%d, has %d)", this_urb,
 538                                 err, this_urb->status);
 539                         clear_bit(i, &portdata->out_busy);
 540                         continue;
 541                 }
 542                 portdata->tx_start_time[i] = jiffies;
 543                 buf += todo;
 544                 left -= todo;
 545         }
 546
 547         count -= left;
 548         dbg("%s: wrote (did %d)", __func__, count);
 549         return count;
 550 }
 551
 552 static void option_indat_callback(struct urb *urb)
 553 {
 554         int err;
 555         int endpoint;
 556         struct usb_serial_port *port;
 557         struct tty_struct *tty;
 558         unsigned char *data = urb->transfer_buffer;
 559         int status = urb->status;
 560
 561         dbg("%s: %p", __func__, urb);
 562
 563         endpoint = usb_pipeendpoint(urb->pipe);
 564         port =  urb->context;
 565
 566         if (status) {
 567                 dbg("%s: nonzero status: %d on endpoint %02x.",
 568                     __func__, status, endpoint);
 569         } else {
 570                 tty = tty_port_tty_get(&port->port);
 571                 if (urb->actual_length) {
 572                         tty_buffer_request_room(tty, urb->actual_length);
 573                         tty_insert_flip_string(tty, data, urb->actual_length);
 574                         tty_flip_buffer_push(tty);
 575                 } else
 576                         dbg("%s: empty read urb received", __func__);
 577                 tty_kref_put(tty);
 578
 579                 /* Resubmit urb so we continue receiving */
 580                 if (port->port.count && status != -ESHUTDOWN) {
 581                         err = usb_submit_urb(urb, GFP_ATOMIC);
 582                         if (err)
 583                                 printk(KERN_ERR "%s: resubmit read urb failed. "
 584                                         "(%d)", __func__, err);
 585                 }
 586         }
 587         return;
 588 }
 589
 590 static void option_outdat_callback(struct urb *urb)
 591 {
 592         struct usb_serial_port *port;
 593         struct option_port_private *portdata;
 594         int i;
 595
 596         dbg("%s", __func__);
 597
 598         port =  urb->context;
 599
 600         usb_serial_port_softint(port);
 601
 602         portdata = usb_get_serial_port_data(port);
 603         for (i = 0; i < N_OUT_URB; ++i) {
 604                 if (portdata->out_urbs[i] == urb) {
 605                         smp_mb__before_clear_bit();
 606                         clear_bit(i, &portdata->out_busy);
 607                         break;
 608                 }
 609         }
 610 }
 611
 612 static void option_instat_callback(struct urb *urb)
 613 {
 614         int err;
 615         int status = urb->status;
 616         struct usb_serial_port *port =  urb->context;
 617         struct option_port_private *portdata = usb_get_serial_port_data(port);
 618         struct usb_serial *serial = port->serial;
 619
 620         dbg("%s", __func__);
 621         dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata);
 622
 623         if (status == 0) {
 624                 struct usb_ctrlrequest *req_pkt =
 625                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 626
 627                 if (!req_pkt) {
 628                         dbg("%s: NULL req_pkt\n", __func__);
 629                         return;
 630                 }
 631                 if ((req_pkt->bRequestType == 0xA1) &&
 632                                 (req_pkt->bRequest == 0x20)) {
 633                         int old_dcd_state;
 634                         unsigned char signals = *((unsigned char *)
 635                                         urb->transfer_buffer +
 636                                         sizeof(struct usb_ctrlrequest));
 637
 638                         dbg("%s: signal x%x", __func__, signals);
 639
 640                         old_dcd_state = portdata->dcd_state;
 641                         portdata->cts_state = 1;
 642                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 643                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 644                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 645
 646                         if (old_dcd_state && !portdata->dcd_state) {
 647                                 struct tty_struct *tty =
 648                                                 tty_port_tty_get(&port->port);
 649                                 if (tty && !C_CLOCAL(tty))
 650                                         tty_hangup(tty);
 651                                 tty_kref_put(tty);
 652                         }
 653                 } else {
 654                         dbg("%s: type %x req %x", __func__,
 655                                 req_pkt->bRequestType, req_pkt->bRequest);
 656                 }
 657         } else
 658                 dbg("%s: error %d", __func__, status);
 659
 660         /* Resubmit urb so we continue receiving IRQ data */
 661         if (status != -ESHUTDOWN) {
 662                 urb->dev = serial->dev;
 663                 err = usb_submit_urb(urb, GFP_ATOMIC);
 664                 if (err)
 665                         dbg("%s: resubmit intr urb failed. (%d)",
 666                                 __func__, err);
 667         }
 668 }
 669
 670 static int option_write_room(struct tty_struct *tty)
 671 {
 672         struct usb_serial_port *port = tty->driver_data;
 673         struct option_port_private *portdata;
 674         int i;
 675         int data_len = 0;
 676         struct urb *this_urb;
 677
 678         portdata = usb_get_serial_port_data(port);
 679
 680
 681         for (i = 0; i < N_OUT_URB; i++) {
 682                 this_urb = portdata->out_urbs[i];
 683                 if (this_urb && !test_bit(i, &portdata->out_busy))
 684                         data_len += OUT_BUFLEN;
 685         }
 686
 687         dbg("%s: %d", __func__, data_len);
 688         return data_len;
 689 }
 690
 691 static int option_chars_in_buffer(struct tty_struct *tty)
 692 {
 693         struct usb_serial_port *port = tty->driver_data;
 694         struct option_port_private *portdata;
 695         int i;
 696         int data_len = 0;
 697         struct urb *this_urb;
 698
 699         portdata = usb_get_serial_port_data(port);
 700
 701         for (i = 0; i < N_OUT_URB; i++) {
 702                 this_urb = portdata->out_urbs[i];
 703                 /* FIXME: This locking is insufficient as this_urb may
 704                    go unused during the test */
 705                 if (this_urb && test_bit(i, &portdata->out_busy))
 706                         data_len += this_urb->transfer_buffer_length;
 707         }
 708         dbg("%s: %d", __func__, data_len);
 709         return data_len;
 710 }
 711
 712 static int option_open(struct tty_struct *tty,
 713                         struct usb_serial_port *port, struct file *filp)
 714 {
 715         struct option_port_private *portdata;
 716         struct usb_serial *serial = port->serial;
 717         int i, err;
 718         struct urb *urb;
 719
 720         portdata = usb_get_serial_port_data(port);
 721
 722         dbg("%s", __func__);
 723
 724         /* Set some sane defaults */
 725         portdata->rts_state = 1;
 726         portdata->dtr_state = 1;
 727
 728         /* Reset low level data toggle and start reading from endpoints */
 729         for (i = 0; i < N_IN_URB; i++) {
 730                 urb = portdata->in_urbs[i];
 731                 if (!urb)
 732                         continue;
 733                 if (urb->dev != serial->dev) {
 734                         dbg("%s: dev %p != %p", __func__,
 735                                 urb->dev, serial->dev);
 736                         continue;
 737                 }
 738
 739                 /*
 740                  * make sure endpoint data toggle is synchronized with the
 741                  * device
 742                  */
 743                 usb_clear_halt(urb->dev, urb->pipe);
 744
 745                 err = usb_submit_urb(urb, GFP_KERNEL);
 746                 if (err) {
 747                         dbg("%s: submit urb %d failed (%d) %d",
 748                                 __func__, i, err,
 749                                 urb->transfer_buffer_length);
 750                 }
 751         }
 752
 753         /* Reset low level data toggle on out endpoints */
 754         for (i = 0; i < N_OUT_URB; i++) {
 755                 urb = portdata->out_urbs[i];
 756                 if (!urb)
 757                         continue;
 758                 urb->dev = serial->dev;
 759                 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
 760                                 usb_pipeout(urb->pipe), 0); */
 761         }
 762
 763         if (tty)
 764                 tty->low_latency = 1;
 765
 766         option_send_setup(tty, port);
 767
 768         return 0;
 769 }
 770
 771 static void option_close(struct tty_struct *tty,
 772                         struct usb_serial_port *port, struct file *filp)
 773 {
 774         int i;
 775         struct usb_serial *serial = port->serial;
 776         struct option_port_private *portdata;
 777
 778         dbg("%s", __func__);
 779         portdata = usb_get_serial_port_data(port);
 780
 781         portdata->rts_state = 0;
 782         portdata->dtr_state = 0;
 783
 784         if (serial->dev) {
 785                 mutex_lock(&serial->disc_mutex);
 786                 if (!serial->disconnected)
 787                         option_send_setup(tty, port);
 788                 mutex_unlock(&serial->disc_mutex);
 789
 790                 /* Stop reading/writing urbs */
 791                 for (i = 0; i < N_IN_URB; i++)
 792                         usb_kill_urb(portdata->in_urbs[i]);
 793                 for (i = 0; i < N_OUT_URB; i++)
 794                         usb_kill_urb(portdata->out_urbs[i]);
 795         }
 796         tty_port_tty_set(&port->port, NULL);
 797 }
 798
 799 /* Helper functions used by option_setup_urbs */
 800 static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint,
 801                 int dir, void *ctx, char *buf, int len,
 802                 void (*callback)(struct urb *))
 803 {
 804         struct urb *urb;
 805
 806         if (endpoint == -1)
 807                 return NULL;            /* endpoint not needed */
 808
 809         urb = usb_alloc_urb(0, GFP_KERNEL);             /* No ISO */
 810         if (urb == NULL) {
 811                 dbg("%s: alloc for endpoint %d failed.", __func__, endpoint);
 812                 return NULL;
 813         }
 814
 815                 /* Fill URB using supplied data. */
 816         usb_fill_bulk_urb(urb, serial->dev,
 817                       usb_sndbulkpipe(serial->dev, endpoint) | dir,
 818                       buf, len, callback, ctx);
 819
 820         return urb;
 821 }
 822
 823 /* Setup urbs */
 824 static void option_setup_urbs(struct usb_serial *serial)
 825 {
 826         int i, j;
 827         struct usb_serial_port *port;
 828         struct option_port_private *portdata;
 829
 830         dbg("%s", __func__);
 831
 832         for (i = 0; i < serial->num_ports; i++) {
 833                 port = serial->port[i];
 834                 portdata = usb_get_serial_port_data(port);
 835
 836                 /* Do indat endpoints first */
 837                 for (j = 0; j < N_IN_URB; ++j) {
 838                         portdata->in_urbs[j] = option_setup_urb(serial,
 839                                         port->bulk_in_endpointAddress,
 840                                         USB_DIR_IN, port,
 841                                         portdata->in_buffer[j],
 842                                         IN_BUFLEN, option_indat_callback);
 843                 }
 844
 845                 /* outdat endpoints */
 846                 for (j = 0; j < N_OUT_URB; ++j) {
 847                         portdata->out_urbs[j] = option_setup_urb(serial,
 848                                         port->bulk_out_endpointAddress,
 849                                         USB_DIR_OUT, port,
 850                                         portdata->out_buffer[j],
 851                                         OUT_BUFLEN, option_outdat_callback);
 852                 }
 853         }
 854 }
 855
 856
 857 /** send RTS/DTR state to the port.
 858  *
 859  * This is exactly the same as SET_CONTROL_LINE_STATE from the PSTN
 860  * CDC.
 861 */
 862 static int option_send_setup(struct tty_struct *tty,
 863                                                 struct usb_serial_port *port)
 864 {
 865         struct usb_serial *serial = port->serial;
 866         struct option_port_private *portdata;
 867         int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
 868         dbg("%s", __func__);
 869
 870         portdata = usb_get_serial_port_data(port);
 871
 872         if (tty) {
 873                 int val = 0;
 874                 if (portdata->dtr_state)
 875                         val |= 0x01;
 876                 if (portdata->rts_state)
 877                         val |= 0x02;
 878
 879                 return usb_control_msg(serial->dev,
 880                         usb_rcvctrlpipe(serial->dev, 0),
 881                         0x22, 0x21, val, ifNum, NULL, 0, USB_CTRL_SET_TIMEOUT);
 882         }
 883         return 0;
 884 }
 885
 886 static int option_startup(struct usb_serial *serial)
 887 {
 888         int i, j, err;
 889         struct usb_serial_port *port;
 890         struct option_port_private *portdata;
 891         u8 *buffer;
 892
 893         dbg("%s", __func__);
 894
 895         /* Now setup per port private data */
 896         for (i = 0; i < serial->num_ports; i++) {
 897                 port = serial->port[i];
 898                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 899                 if (!portdata) {
 900                         dbg("%s: kmalloc for option_port_private (%d) failed!.",
 901                                         __func__, i);
 902                         return 1;
 903                 }
 904
 905                 for (j = 0; j < N_IN_URB; j++) {
 906                         buffer = (u8 *)__get_free_page(GFP_KERNEL);
 907                         if (!buffer)
 908                                 goto bail_out_error;
 909                         portdata->in_buffer[j] = buffer;
 910                 }
 911
 912                 for (j = 0; j < N_OUT_URB; j++) {
 913                         buffer = kmalloc(OUT_BUFLEN, GFP_KERNEL);
 914                         if (!buffer)
 915                                 goto bail_out_error2;
 916                         portdata->out_buffer[j] = buffer;
 917                 }
 918
 919                 usb_set_serial_port_data(port, portdata);
 920
 921                 if (!port->interrupt_in_urb)
 922                         continue;
 923                 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 924                 if (err)
 925                         dbg("%s: submit irq_in urb failed %d",
 926                                 __func__, err);
 927         }
 928         option_setup_urbs(serial);
 929         return 0;
 930
 931 bail_out_error2:
 932         for (j = 0; j < N_OUT_URB; j++)
 933                 kfree(portdata->out_buffer[j]);
 934 bail_out_error:
 935         for (j = 0; j < N_IN_URB; j++)
 936                 if (portdata->in_buffer[j])
 937                         free_page((unsigned long)portdata->in_buffer[j]);
 938         kfree(portdata);
 939         return 1;
 940 }
 941
 942 static void option_shutdown(struct usb_serial *serial)
 943 {
 944         int i, j;
 945         struct usb_serial_port *port;
 946         struct option_port_private *portdata;
 947
 948         dbg("%s", __func__);
 949
 950         /* Stop reading/writing urbs */
 951         for (i = 0; i < serial->num_ports; ++i) {
 952                 port = serial->port[i];
 953                 portdata = usb_get_serial_port_data(port);
 954                 for (j = 0; j < N_IN_URB; j++)
 955                         usb_kill_urb(portdata->in_urbs[j]);
 956                 for (j = 0; j < N_OUT_URB; j++)
 957                         usb_kill_urb(portdata->out_urbs[j]);
 958         }
 959
 960         /* Now free them */
 961         for (i = 0; i < serial->num_ports; ++i) {
 962                 port = serial->port[i];
 963                 portdata = usb_get_serial_port_data(port);
 964
 965                 for (j = 0; j < N_IN_URB; j++) {
 966                         if (portdata->in_urbs[j]) {
 967                                 usb_free_urb(portdata->in_urbs[j]);
 968                                 free_page((unsigned long)
 969                                         portdata->in_buffer[j]);
 970                                 portdata->in_urbs[j] = NULL;
 971                         }
 972                 }
 973                 for (j = 0; j < N_OUT_URB; j++) {
 974                         if (portdata->out_urbs[j]) {
 975                                 usb_free_urb(portdata->out_urbs[j]);
 976                                 kfree(portdata->out_buffer[j]);
 977                                 portdata->out_urbs[j] = NULL;
 978                         }
 979                 }
 980         }
 981
 982         /* Now free per port private data */
 983         for (i = 0; i < serial->num_ports; i++) {
 984                 port = serial->port[i];
 985                 kfree(usb_get_serial_port_data(port));
 986         }
 987 }
 988
 989 MODULE_AUTHOR(DRIVER_AUTHOR);
 990 MODULE_DESCRIPTION(DRIVER_DESC);
 991 MODULE_VERSION(DRIVER_VERSION);
 992 MODULE_LICENSE("GPL");
 993
 994 module_param(debug, bool, S_IRUGO | S_IWUSR);
 995 MODULE_PARM_DESC(debug, "Debug messages");